As well as its most obvious enveloping applications, Ft Elettronica's "Envelope Follower/Triggered Filter" offers a wide range of static filter options. With the addition of the correct expression pedal this enables it to be used as a normal wah, but with considerably more options (all five panel controls on the right "Filter" half of the pedal still remain active).

The external trigger facility enables the filter to be triggered by a completely separate audio source which can be another instrument, pulse or click or even touching a lead connected to the input! A great way to exploit this is to use one aux send on your mixer for the sound source and another one for the trigger so you can literally trigger anything with anything which as you can imagine can give rise to some pretty freaky effects.

Trigger Section

Sensitivity determines the level at which triggering operates.
Attack - Filter attack response
Decay - Filter decay time
Up/Down - A two-position switch that determines whether the filter sweeps up or down.
Full/half/off - A three-position switch that determines the level of the bandwidth. Half the bandwidth affects only higher frequencies, while the off position turns off the trigger section, allowing the Meatball to be used as a static-tone filter.

The effects loop allows external effects to be placed after the trigger section but before the filter section.

Filter Section

Colour - Filter resonance
Intensity - Filter depth
Blend - Ratio of dry to wet signal
Frequency range - A four-position switch that determines the range of the frequency, from low to high.
Filter selection - A three-position switch that determines the level of the bandwidth, between low-pass, band-pass, and high-pass filter.

"I dissapear" starts with the sounds of Envelope Follower/Triggered Filter